单项选择题

Which security mechanism uses the concept of a realm？（）

A.Authorization
B.Data integrity
C.Confidentiality
D.Authentication

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单项选择题

Which basic authentication type is optional for a J2EE 1.4 compliant web container？（）

A.HTTP Basic Authentication
B.Form Based Authentication
C.HTTP Digest Authentication
D.HTTPS Client Authentication

多项选择题

Which two are valid values for the element inside a element ofa web application deployment descriptor？（）

A.NULL
B.SECURE
C.INTEGRAL
D.ENCRYPTED
E.CONFIDENTIAL

多项选择题

Click the Exhibit button.

Given the JSP code：
1.<%
2.pageContext.setAttribute（ "product"，
3.new com.example.Product（ "Pizza"， 0.99 ））；
4.%>
5.<%-- insert code here --%>
Which two， inserted at line 5， output the name of the product in the response？（）

A.<%= product.getName（）%>
B.<jsp：useBean id="product" class="com.example.Product" /> <%= product.getName（）%>
C.<jsp：useBean id="com.example.Product" scope="page"> <%= product.getName（）%></jspuseBean>
D.<jsp：useBean id="product" type="com.example.Product" scope="page" /><%= product.getName（）%>